Refrigerating and ventilating appliance



June 7, 1932. c. A. MOORE REFRIGERATING AND VENTILATING APPIIJIANCEI Original Filed Sept. 12. 1930 2 Sheets-Sheet uobonacaaoaoooo9oneoo Charles A. Moore June 7,1932.

C.A.MOORE REFRIGERATING AND VENTILATING APPLIANCE Original Filed Sept. 12. 1

2 Sheets-Sheet 2 swuentoi Patented June .7, 19 32 PATENT OFFICE,

CHARLES A. MOORE, OF EDINA, MINNESOTA REFBIGERA'IIN G AND V'ENTILA'IING APPLIANCE 7 Application filed September 12, 1930, Serial No. 481,427. Renewed October 24, 1981.

My invention relates to improvements in refrigerating and ventilating appliances for rooms or chambers for the storage of perishable products. v 1 5 An object of the invention is to provide an appliance of the present character adapted to be supplied for installation as a factory made unit or to be readily assembled at the siteof installation from parts fabricated at the factory.

A further object of the invention is to provide a refrigerating and ventilating appliance which, though relatively simple and inexpensive in construction, is durable and of relatively. great capacity.

Another object is to provide for compactness in a refrigerating and ventilating appliance of large capacity and further to provide in such an appliance, simple and effective ain circulating means, whereby the air throughout a storage chamber may be maintained in proper condition without the employment of other agencies, such as the usual elongated banks of refrigerating coils, which are customarily disposed throughout the I tpngth and breadth of refrigeratmg chamers.

lVith the foregoing and other objects in view, which will appear in the following description, the invention resides in the novel combination and arrangement of parts and in the details of construction hereinafter described and claimed. In the drawings, Fig. 1 is a vertical, central, sectional View of an a pliance embody- 7 ing m invention, the same emg shown as installef in the end of a stora e room or chamber; Fig. 2 is an elevationa view of the appliance shown in Fig. 1, in connection with which is shown, in vertical section,-an egress pipe for the escape of air from the chamber.

In the drawings, it will be noted that I have shown diagrammatically, a fragment of a building structure including a fioor 10, end walls 11, side walls 12 and ceiling 13 providing a storage chamber X. The appliance pro er, as seen in Fig. 1, is located at one end of the chamber and medially thereof for purposes hereinafter to appear.

a This appliance, broadly, includes three upright concentric conduits A, B and C. The inner conduit A consists of a refrigerant con ducting pipe 14 coiled closely, turn upon turn, the coiled pipe structure being supported in its upright position by means of standards 15 of channel iron, secured at. their lower ends to a base ring 16 seated on a base plate 17. Clamping straps 18 on the inside of the coiled pipe structure are clamped against the turns of said -pipe 14 by bolts 19 which pass so through the paired straps 18 and standards 15 and between said turns of said pipe 14. The intermediate conduit B is constructed in a manner similar to that of the inner conduit A, its respective refrigerant conducting pipe, as standards, inside clamping straps and base ring being numbered 20, 21, 22 and 23, respectively. lso, in a similar manner is the outer conduitC constructed, its respective refrigerant conducting pipe, standards, inside 7 clam ing straps and base ring being numbered 24, 25, 26 and 27, respectively.

The base plate 17 upon which all of the base rings 16, 23 and 27 areseated has its footing in ashallow pan 28 adapted to contain a supply of brineor-ot-her non-freezing liquid. The lower turns of the refrigerant conducting pipe 20 which forms the intermediate conduit B are submerged in the liquid within this pan and encircling said turns of 30. said pipe, and a number of the turns thereof immediately above the surface of said liquid, in an annular band or guard 29 of sheet metal or the like sealing the spaces between said turns of said pipe 20. The lowermost turn of 35 the refrigerant conducting pipe 14 which forms the inner conduit B is disposed considerably above the level of the liquid in the pan 28, which liquid, as it will be seen, closes the lower end of the intermediate conduit B. Likewise, the lowermost turn of the pipe 24 which forms theouter conduit C, is disposed considerably above the surface of the liquid in said pan. Thus, it will be seen that the inner conduit A communicates at its lower end with the lower portion of the intermediate conduit B, while the outer conduit C communicates at its lower end with the interior of the chamber at the lower portion thereof.

At the top of the appliance is a hood 30 consisting of an annular side wall 31 and a head 23. This hood 30 caps the outer conduit C,

the lower marginal portionof its annularside wall 32 being clamped between the upper turn of the coiled pipe 24 and the upper-ends of the standards 25. Extending upwardly from the upper end of the'inner conduit A- is a pipe 33 which passes through the head 32' of the hood 30 and terminates at a lever near the ceiling 13 of the chamber X, the lower marginal portion of said pipe being clamped between the uppermost turn of the coiled pipe 14 and the standards 15 which support. said pipe 14. Disposed near the upper end of the upright pipe 33 is a damper 34, the handle 35 thereof being accessible exteriorly of the hood 30. Connecting with the said upright pipe 33 at a point beneath said damper 34 i and extending through the side wall 31 of the hood is a horizontal branch pipe 36 which extends through the end wall 11 of the vstructure roviding the chamber X. Within this branc pipe 36 is a damper 37, the handle 38 thereof being accessible as shown in Fig. 2. Also within this branch pipe 36 and within a reinforced'enlargement 39 thereof, is a fan 40, the same being driven through a belt 41 from a motor 42, secured to the lower side of said enlargement 39. .3 r

Issuing from the hood 30- is a branch pipe 43 fitted with a damper 44 having a handle 45 accessible, as shown in Fig. 2 The end of this pipe 43 is provided with a' reinforced enlar ement 46 within which is disposed a' fan 4 the same being driven through a belt 48 from a motor 49 suspended beneath .said enlargement 46.

Abase block 50 on the floor 10 near the pan 3 28 supports a pump 51 of suitable construction and a motor 52 for driving said pump.

This pump is fitted with an inlet pipe 53 conv necting with the pan 28' and is also fitted with a feed pipe 54 extending upwardly to the hood 30, thence horizontally through the side wall 31 thereof and through the upright pipe 33 to a point axially of said pipe 33. Connected with the end of this feed pipe is a frigera-ted and nozzle 55 for spraying liluid downwardly through the inner conduit into the pan 28, where the spra ed liquid is caught and retlien recirculated through said nozzle 55. '1

In operation, the'inlet ends 14, 20' and 24 of the coiled refrigerant conducting ipes 14, 20 and 24, which form the conduits X, B and C, are suitably connected with a source of refrigerant su ply, such as brine orthe like,

- while the out et ends 14", 20, 24 of said pipes which project through the lower margin of the side wall 31 of the hood 30, have suitable return connections (not shown) leading back to said source of supply. Upon the circulation of the refrigerant through the coiled pipes 14, 20 and 24, the turns of each thereof are frosted together, rendering the walls of the inner and outer conduits A and C solid from top to bottom and the walls of the intermediate conduit B solid fromto to near the bottom and within the extent'o the sealing band 29,, This band, as will be readily comprehended, preserves the seal between the turns of thepipe; 20' at the lower part of the "conduit B where'the frost might be dissolved ber X. Thus operating, the incoming fresh air is directly refrigerated in its descent through the inner conduitA and it is further direct y refrigerated in its ascent in the intermediate conduit B,not.only by the turns of the refrigerant conducting pipe 20 which forms the said intermediate conduit B, but

v-alsobv the turns of the refrigerant conducting pipe 14which forms the inner conduit A. Likewise, the air passing. from the lower portion of the room upwardl through the outer conduit C is directly re rigerated, not only by the-J-turns of the refrigerant conducting pipe 24 which forms'said outer conduit C, but also by the turns of the refrigerant pi 20 which forms the intermediate conduit In this connection, it will be observed that the incoming fresh air is subjected first to the inner surface'of the inner conduit A in its descent and'thereafter subjected to the outer surface of said inner conduit and the inner surface of the intermediateconduit B in its ascent, whereby it is effectively refrigerated and freed of its moisture content before being introduced into the interior of the room.

Under suitable conditions, a pump 51 may be put into operation to force a spray of water from the 'nozzle 55 downwardly through the inner conduit A, the result being that the incoming fresh air is washed.

within said inner conduit A and its descent therethrough stimulated by the force of the sprayed li uid. The supfply. of liquid to the pump 51, ing drawn mm the pan 28, is

refrigerated'by the lower turns of the pipe;

20 submerged therein and being thus refrigerated, the liquid spray from the nozzle 55 serves as a refrigerating medium for the incomin fresh air.

Un er conditions when it may be desirable to recirculate air through the appliance other than by the path through the outer conduit C from the lower portion of the chamber, the damper 34 may be opened more or less,

be started, after closing the damper'34.

In conjunction with my appliance, it may,

under some circumstances, be desirable to 1 thereof and the upper end of said pipe openrovide' for the escape of air from the chamer in greater quantities than is possible by leakage alone. It is to be noted in Fig. 2 that I have provided means for the egress of 'air from the room, which means consists of the lower end of said pipe openlng into the an upright pipe 56 supported upon feet 5?,

interior of the chamber at the lower 'portion ing into the interior of the chamber at its ripper portion. Located near the upper and lower ends respectively of said pi e 56' are,

dampers 58 and59. Connectingwit thispipe between said dampers is a horizontal branch 11 of the chamber X and communicates with the outer atmosphere. Upon the building of pressure within the chamber X by opera ating either or both of the fans and 47,

air may be exhausted from the lower portion of the chamber by opening the damper 59 or from the upper portion of the chamber b opening the damper 58, or from both suci portions of said chamber by openihgfbothgof' said dampers 5'8 and 59, the flow of air from the interior of the chamber into-said pipe 56 at either end thereof being susceptible of being regulated, as desired, through the adjustment of the dampers 58 and 59.

i The branch pipe 43, issuing from the hood 30', is arranged so that the-fan 47 blows the refrigerated air from the top of-the ap liance along the upper portion of the cham er longitudinally, medially thereof, which space within such chamber customarily constitutes the upper portion of a central trucking aisle,

the lading being stored at either side thereof.

In thus directing refrigerated air from the appliance into the interior of the chamber, the supply of cold air along the room centrally thereofdescends, by gravity, in'the aisle space, thence filters into and about the stored lading. Preferably, the upright exhaust pipe 56 is located near the appliance proper and/or. near the end wall 11 of the chamber adjacent which the appliance is located. In thus placing said exhaust pipe 56, a thorough circulation of the refrigerated. air within the chamber is'assured.

In providing a compact appliance of relatively great capacity, as above described, I dispense entirely with the necessity of an especially devised ipe construction extending along the chem er at the ceiling or walls thereof. In this compact appliance of relatively great capacity, I provide for suitably stimulated parting fromthe spirit of my invention. pipe .60 which extends through the end wall intermediate conduit, the buterconduit com conditioning the air within a refrigerating chamber in which conditioning process may be included the refrigeration of the .air and the recirculation thereof through the ap liance from the lower portion ofthe cham er and from the upper portion thereof, as well, and in which may be included the introduction of fresh air in regulated quantities." {Also within the air conditioning possibilities-to be found, in the use of my improved ap ance, the/air may be washed and itsdi by the use of the spray andt supply of -the I refrigerating liquid forv y m y? .v effective m .JIOhanges in the specific form of niy invenl tion, as herein. disclosed, may be made with. in the scope of-iwhat is claimed Wlthbtltjdj thereof, said appliance comprising three concentric conduits, each consisting of a refrigerant conducting pipe vcoiled closely turn upon turn, the inner conduit communicating atits' lower end with the lower portion of the m municating at its. lower end with the lower portion of the chamber, means forforcing air from; the outer .atmos here downwardly through said inner con uit, and means for drawing air upwardly through the intermediate and outer conduits and mixing and' blowing it into the upper portion of the chamber longitudinally medially thereof.

2. The combination with a structure forming a chamber, of an upright appliance therein com risin three concentric conduits, each consisting o a refrigerant conducting pipe coiled closely turn upon turn, the inner conduit communicting at its upper end with the outer atmosphere and at its lower end with the lower portion of the intermediate conduit, the outer conduit communicating at'its lower end with the lower portion of the chamber, and means for drawing air upwardl through the intermediate conduit from the ower end of the inner conduit and through theouter conduit from the lower portion of the chamher and blowing it into the upper portion of said chamber.

3. The combination with a structure forming a chamber, of an upright appliance therein comprising three concentric conduits, the intermediate conduit consisting of a refrigerant conducting pipe coiled closely turn at its upper end with the outeratmosphere and at its lower end with the lower portion of the intermediate conduit, the outer conduit communicating at its lower end with the lower portion of the chamber, and means for drawing air upwardly both through the intermediate and outer conduits and blowing it into the upper portion of the chamber.-

4. The combination with the structure forming a chamber, of an upright appliance therein comprising three concentric conduits, the intermediate conduit consisting of a refrigerant conducting pipe coiled closely turn upon turn, the inner conduit communicating at its upper end with the outer atmosphere and at its lower end with the lower portion of the intermediate conduit, the outer conduit communicating at its lower end with the lower portion of the chamber, and means for drawing air u wardly both through the intermediate an outer conduits and blowing it into the upper portion of the chamber, and means within the inner conduit for impelling the flow of air downwardlytherethrough from the outer atmosphere into the lower portion of the intermediate conduit and for washing and cooling the airwithin said inner conduit.

5. The combination with a structure forming a chamber, of an upright appliance therein comprising three concentric conduits, the intermediate conduit consisting of a refrigerant conducting pipe coiled closely turn upon turn, the inner conduit being in valved communication at itsupper end with the outer atmosphere and also with the interior oi the chamber at its upper portion and being in communication at its lower end with the lower portion of the intermediate conduit, the outer conduit communicating at its lower end with the lower portion of the chamher, and means for drawing air upwardly both through the intermediate and outer conduits and blowing it into the upper portion of the chamber.

6. The combination with a structure forming a chamber, of an upright appliance therein comprising three concentric conduits, the intermediate conduit consisting of a refrigerant conducting pipe coiled closely turn upon turn, the inner conduit communicating at its upper end with the interior of the chamber at the upper portion thereof and communicating at its lower end with the lower portion of the intermediate conduit', the outer conduit communicating at its lower end with the lower portion of the chamber, and means for drawing air u wardly both through the intermediate an outer conduits and blowing it into the upper portion of the chamber along the same. I

7. The combination with a structure forming a chamber, of an upright appliance therein comprising three concentric conduits, one conduit consisting of a refrigerant conducting pipe coiled closely turn upon turn, the inner conduit communicating at its upper end with the outer atmosphere and at its 'lower with the lower portlon of the intermediate conduit, the outer conduit communicating at its lower end with the lower portion ofthe chamber, and means for drawing air upwardly both through the intermediate and outer conduits andpblowing it into the upper portion of the chamber.

8. The combination with a structure forming a chamber, of an upright appliance therein comprising three concentric conduits, two of said conduits each consisting of a refrigerant conducting pipe coil'ed closely turn upon turn, the inner conduit communicating at its upper end with the outer atmosphere and at its lower end with the lower portion of the intermediate conduit, the outer conduit communicating at its lower end with the lower portion of the chamber, and means for drawing air upwardly both through the intermediate and outer conduits and blowing it into .the upper portion of the chamber. a

9. The combination with a structure forming a chamber, of an upright appliance therein comprising first, second and third concentric conduits, the first conduit admitting air to the appliance at the top thereof and communicating at its lower end withv the lower portion of the second conduit, the third conduit communicating at its lower end with the lower portion of the chamber, and means for drawing air upwardly through the second and third conduits and blowing it into the upper portion of the chamber, the second con- .cluit being refrigerated.

. 10. The combination with a structure forming a chamber, of an upright appliance there in comprising three upright concentric conduits, the intermediate conduit being refrigerated, the inner conduit being in communication at its upper end with the outer air and at its lower end with the lower portion of the intermediate conduit, the outer conduit being in communication at its lower end with the lower portion of the chamber, means for drawing air upwardly through the intermediate and outer conduits and forcing it into the upper portion of the chamber, and valved means for the escape of air from the upper portion of the chamber and from the lower portion thereof, said means being valved to provide for the selective regulated flow of air from said portions of said chamber.

11. The combination with a structure forming a chamber, of an upright appliance therein comprising three upright concentric conduits, the intermediate conduit being refrigcation at its upper end with the outer air and at its lower end with the lower portion of the intermediate conduit, the outer conduit being in communication at its lower end with the lower portion of the chamber, means for drawing air upwardly through the intermediate and outer conduits and forcing it into the upper portion of the chamber, and valved means for the esca of air from the chamber.

12. In an appliance of the character described for installation in a chamber, three upright concentric refrigerating conduits, each including a coiled refrigerant conduct-i ing pipe and standards supporting the same, a base plate common to the supporting standards of said conduits, the lower end of the inner conduit opening into the lower portion of the intermediate conduit, the-outer conduit being in communication at the lower end thereof with the lower portion of the chamber, a hood capping the outerconduit, the

upper end of the intermediate conduit opening into said hood, means for impellingair,

from the exterior of said chamber into the inner conduit at the upper end thereof, and means for drawing air upwardly both through the intermediate conduit and the outer conduit and impelling the same into the upper portion of the chamber.

13. In an appliance of the character described for installation in a chamber, three upright concentric refrigerating conduits, each including acoiledrefri erant conducting pipe, the lower portion 0 the intermediates conduit depending beneath the lower ends of the inner and outer conduits, a pan containing a liquid refrigerant, said depending portion of said intermediate conduit dipping into the liquid in said pan and being closed thereby and, in turn, cooling the same, the lower end of the inner conduit opening into the lower portion of the intermediate conduit, the outer conduit being incommunication at the lower end thereof with the lowor portion of the chamber, means for conducting fresh air from the exterior of said chamber into the inner conduit at the'upper end thereof, means for drawing air upwardly through the intermediate conduitand the outer conduit and mixing and impelling the same into the upper portion of the chamber, a downwardly directed spray nozzle dis-. posed within the inner conduit at the upper portion thereof, and means for pumping. the liquid from said pan to said nozzle.

14. In an appliance of the character described for installation in a chamber, a first upright conduit and a second upright conduit'encircling said first conduit, said second conduit comprisinga refrigerant conducting pipe coiled closely turn upon turn, the lower portion of the second conduit depending beueath the lower end of the first conduit, a receptacle containing a refrigerating liquid, the lower turns of the refrigerant pipe forming said second conduit being submerged in said liquid, the lower end of the first-conduit opening into the lower portion ofthc'sccond conduit, means for conducting air into the first conduit at the upper end thereof, a

downwardly directed spray nozzle disposed in said first conduit, means for supplying said nozzle with liquid from said receptacle, and means for drawing air upwardly throu h said second conduit and impelling it into t e chamber at the upper portion thereof.

15.-In an appliance of the character described for installation in a chamber,-a first upright conduit and a second upright conduit encircling said first conduit, said second conduit comprising a refrigerant conducting pipe coiled closely turn upon turn, the lower portion of the second conduit depending beneath the lower end of the first conduit, a re-' ceptacle containing a refrigerating liquid, the lower turns of the refrigerant pipe forming said second conduit bein submerged in said liquid, an annular guar sealing the spaces between a plurality of the turns of said refrigerant pipe immediately above the surface of the liquid in said receptacle, the lower end of the first conduit opening into the lower portion of the second conduit, means for conducting air into the first conduit at the upper end thereof, a downwardly directed spray nozzle disposed in said first conduit, means for supplying said nozzle with liquid from said receptacle, and means for drawing air upwardly through said second conduit and impelling it into the chamber at the upper portion thereof.

16. In an appliance of the character described for installation in a chamber three upright concentric refrigerated conduits, the lower end of the inner conduit opening into the lower portion of the intermediate conduit, the outer conduit being in communication at the lowerend thereof with the lower portion of the chamber, a hood capping the outer conduit, the upper end of the intermediate conduit opening into said hood, an upright pipe extending from the upper end of the inner conduit through the to of said hood to a point near the ceiling of t e chamber, a valve in said pipe, a branch pipe condamper and extending through said hood into the outer air, a damper in said branch pipe, an egress pipe connecting with said hood and havin a amper and a fan therein, the fan being a apted to draw air upwardly through the intermediate conduit and the outer conduit and impel the same into the 'necting with said upright pipe beneath said outer air extending through said hood and connecting with the upper'end of the inner conduit, a fan in said ingress pipe for stimulating the movement of airtherethrough, an egress pipe connecting with said hood and having a fan therein adapted to draw air upwardly through the intermediate conduit and the outer conduit and impel the same into the interior of the chamber.

18. The combination with a structure forming a chamber of an upright appliance therein including communicating at their upper ends with the upper portion of the chamber and at their lower ends with each other, one of said conduits bein refrigerated, said appliance ,further inc uding a thirdrefrigerated conduit communicating at its upper end with the upper portion of the chamber and at its lower end with the lower portion of said chamber, and means for drawing air up wardly from the second and third conduits and-mixingand blowing it into the upper portion of the chamber.

In testimony whereof I have aifixed my signature.

CHARLES A. MOORE.

first and second conduits 

